What is the effectof increase in conc of zinc ions on the electrode potential of Zn electrode for which E = -0.76v?

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Solution

Dear Student,

Zn has a Standard Electrode potential of -0.76 volts.

Standard means it has been assigned a value against Standard Hydrogen Electrode (SHE).
SHE has been assigned a value = 0 for practical purposes
$(I t s a b s o l u t e e l e c t r o d e p o t e n t i a l i s 4.44 \pm 0.02 V a t 25 ° C, b u t f o r c o m p a r i n g a l l o t h e r m e t a l s, i t i s a s s i g n e d 0, a t a l l t e m p e r a t u r e s)$
So, it means that -0.76 is a standard value for Zn against SHE.
It means each electron is pushed from Zn with 0.76 v amount of force towards H ions.

It is a constant. It does not change. Concentration of ions has no effect on this value.

Regards
Arnab Bhattacharya

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